Photonic　crystal　fibers　have　attracted　intensive　attention　because　of　its　advantages　of　a　freedom　design　and　a　novel　light　guiding　mechanism.　Compared　with　photonic　bandgap　fibers　and　Kagome　fibers,　the　hollow-core　anti-resonant　fibers　(HC-ARF)　exhibit　excellent　optical　properties　in　terms　of　simple　structure,　single　mode　transmission,　broad　transmission　bandwidth　and　low　optical　attenuation.　HC-ARF　is　suitable　for　UV/mid-IR　light　transmission,　high　power　laser　generation,　nonlinear　optics,　sensing　and　so　on.　However,　in　order　for　HC-ARF　to　be　widely　used,　the　fusion　of　HC-ARF　and　a　conventional　single-mode　fiber　must　be　simple　and　low-loss.　While,　because　the　special　cladding　capillaries　of　HC-ARF　are　easily　destroyed　during　splicing,　and　the　mode　field　of　HC-ARF　is　different　with　single　mode　fiber,　the　direct　splicing　technique　easily　leads　to　a　large　loss.　So　we　use　a　solid-core　large　mode　area　fiber　with　a　core　diameter　of　20　μm　as　an　intermediate,　to　obtain　a　low-loss　fusion　splice　between　a　HC-ARF　and　a　conventional　single　mode　fiber.　Compared　to　the　direct　splicing　technique,　which　yields　a　splice　loss　of　3　dB,　the　intermediate　fiber　technique　makes　the　overall　insertion　loss　decrease　to　0.844　dB.　©　2018,　Chinese　Lasers　Press.　All　right　reserved.